I have the usual old rustproofing scale and flaking going on.  I can deal with that using carpenter wood chisels.  They are sharp enough to knock it loose.  My question is the remaining light rust on the major frame crossmembers.  How have you all dealth with that without frame off restoration?  Any tips, ideas or suggestions are welcomed.  Odly enough on the front suspension major components where grease lubrication was a maintenance requirement, there is little evidence of frame rust, probably because of the close proximity of all the grease fittings.  Go figure.  Thanks, Charlie.